Sand cleaning and reclaiming unit



Dec. 18, 1928.

H. w. TITGEN SAND CLEANING AND RECLAIMING' UNIT Filed Aug. 7, 1926 Patented Dec. 18, 1928.

UNITEDy STATES PATENT OFFICE. e"

HARRY W. TITGEN, or PHILADELPHIA, rENNsYLvANIA.

SAND CLEANING AND RECLAIMING UNIT.

Application ledAugust 7, 1926. Serial No. 127,940.

apparatus of the class described characterized by its compactness and simplicity of design; by its relatively low operating expense and by itsrelatively high efficiency as compared with that of the'rectangular screens, suction boxes and like mechanisms of the prior art.

Another object of my invention is to provide a sand cleaning unit, wherein a housing for a revolving screen is mounted on the head of an elevator casing, permitting the screen to be ,o erated by the elevator head shaft.

Anot er obj ect of my invention is to provide a two-part housing for a rotatable screen, one 'of the parts being provided with clean sand, dust and tailings discharge optlets, the other part constituting a removable closure for the screen.

With these and other objects and applications in mind, my invention further consists in the details of construction and operation,

hereinafter described and claimed and illustrated in the `accompanying i drawings, whereIn- Fig. 1 is a detail, top plan view of a lsand comprises a head portion 5 having a removable hood section 6, which may be secured in positionas shown in Figs.V 1 and 2, wherein a lower edge 7 is positioned to rest on horizontal shoulders 8 formed by flanges 9 and `11 of angles12 and`13, flanges 14and 15 of which are respectively secured to the end and side walls 4 and 3. Side walls 16 of the hood section .6 may be providedwith slots 17 4extending to thelower edge 7 for the removable reception of ends 18 of an elevator head shaft 19.

The shaft end portions 18 may be respectively journaled `in bearings 21 which are mounted for verticaladjustment in slots `22 raised end 38 of the screen shaft 32. youter end of the shaft 57 carries a sprocket formedin brackets 23. The brackets 23 are respectively mounted on the horizontal flanges 1l of the sidewall angles 13. The vertical adj ustnientof the headshaft may be effected by pairs of screw bolts 24, 25, which are threaded in the bracket 23 so as to extend into engagement with opposite portionsof the bearings 21, said adjustment occurring upon the loosening of one of the bolts 24, 25 and the tightening of the other.

.The used sand may be discharged from the elevator 1 through an enclosed chute 26 which leads from the casing head portion 5 downwardly through a wall 27 of a housinr 28 to an upper end 29 of an axially inclined screen 31. rlhe screen 31 is mounted on an inclined shaft 32, a lower end 33 of which extends through a wall 34 spaced from the wall 27 and is supported on a bearing 35. The latter is mounted on a horizontal flange portion 36 of an angle 37, a vertical flange 37 being secured to the end wall 34.

An upper end 38 of the inclined screen shaft 32 extends through the housing end wall 27 and is journaled in a bearing 39 carried by a horizontal fiange 41 of an angle 42. Opposite ends 43 and 44 of the horizontalv flange 41 are mounted on horizontal flanges 45 and46 of angles 47 and 48 respectively. Vertical flanges 49 and 51 of these angles are respectively secured to opposite side walls 52 and 53 of the housing 28.

In accordance with my invention, the screen housing 28 yis mounted on the elevator head portion 5, as shown in Figs. 1 and 2, wherein one of the side angles 47, 48, preferably the former,`is extended so that the vertical flange 49 thereof may be secured to the elevator casing side wall 3. The screen housing 28 may be further supported in the position shown bymeans of a second angle 54, a vertical flange 55 oit' which is secured to the elevator casing end wall 4, a horizontal flange 55being secured to the corresponding supporting flanges 45 and 46 ofthe side wall angles 47 and 48 respectively. The supporting flange 55 of the angle 54 provides a support for a' bearing 56 which rotatably carries a shaft 57 p An inner end ofthe shaft 57 kcarries a beveled gear-wheel 58 which meshes with a bevel gear-wheel 59 mounted on `the outer The wheel 61 adapted to engage a sprocket chain 62 which extends therefrom around asproclr et wheel 63 mounted on the elevator' head shaft 18 and an idler (is. The latter is mounted for vertical movement so as to compensate for such slack in the chain as may result from the adjustment of the elevator head shaft 18,

the particular mounting shown comprising a bracket member having a horizontal section 60 secured to the side wall angle 13 and a vertical section (37 slotted to receive a pivot pin (i8 for the idler Gel.

The housing for the screen 31 may comprise the upper `part 69 and alower part 73. The lower part 7 3 includes the spaced longitudinally extending side Valls 52, 53, and end `walls 7 4, 75, the latter respectively constituting contmuations `of the walls 34: and 27. i `'The side walls 52 and 53 comprise vertical sections 7G and 77, which respectively support the angles #i8 and 47, and inwardly inclined sections 7 8 and 79 which terminate in a horizontal bottom wall 81. The end wall ex- `tends inwardly to form one wall of a clean sand hopper 82, an opposite wall S3 of which extends upwardly from the bottom wall S1 between the side walls 52 and and terminates adjacentto a lower open end 811 of the screen B1. The hopper SQ is thus provided with an open upper end 85, which eX- tends from the inlet end 29 to the outlet end S4. of the screen 31, whereby all clean sand passing through the screen 31 may be collected into one chamber. 'Ihe sand may be conveyed away from the chamber 82 through an outlet 86 in the bottom wall 81 and piping S7 leading to a tank 8S of a sand blast ma` chine.

The tailings, passing from the lower end 84 oi the screen 31 are deposited in a chamber S9 formed by the adjacent side and end walls oit' the lower housing part 73 and the inclined wall S3 which also forms one wall oi the clean sand chamber 8:2 as just noted. An outlet pipe 91 serves to permit the withdrawal .of the tailings i'romthe chamber 89. The'dnst incident to the normal operation of the rotary screen may be drawn intoa dust chamber 92 y through a screen 93 which extends inwardly from an upper edge of the vertical side wall ,section 7G substantially parallelto the inclined section 7S between the inner and `outer walls 75 and 83 of the sand chamber 82. rl`he dust may be removed from the chamber 92 through a suction pipe 94 connected' to an opening inthe .vertical wall section 76.

Since it may be desirable under some conditions to have access to the screen 31 as well as the chambers 82, 89 and 92,1 have con# structed the upper part G9 of the screen housing 28 in the form of a removable cover 95. The cover 95 may be of semi-cylindrical form with opposite ends 96 and 97 resting onsupi portingr lianges 9S and 99 extending inwardly from vthe end walls 34 and 27, respectively.' i

The covermay be locked in position,byhscrews 101 which extend through tlangefedge por tions 102 and 103 to the horizontal flanges '15 and l0 of the side wall angles 47 and 48, respectively.

VVVhen the elevatoris operated, used sand in the blast room is raised to a point above the chute. Q6 and then discharged therethrough into the open upper end 29 ol the screen 31,which all the while is being operated by the head shaft 1S through the sprocket chain G2, shaft 57 and gearing 55, 59. 'lhe rotation ofthe screen 31 causes the separation oi the sand from the scale or other undesirable materials, so that the sand readily passte through the screen `to the clean sand hopper 82 from which it may be discharged through the piping 87 into the tank 88 ihr the sand blast machine. The tailings are discharged from the screen 31 through the open end Sil into the chamber 89 and conveyed therefrom through the outlet pipe 91. Such dust as is tormedduring the above reclaiming operation passes through the perforated wall 93 into the dust chamberQQ from which it passes into the sucticnpipe 94 returning to adust collector or other receptacle (not shown).

Thilo I have shown only one embodiment of my invention, for the purpose ofdescribing the same and illustrating its principles of construction and operation, it is apparent that various changesand modifications may be made therein without departing from the spirit of my invention and I desire, there tore, that only such limitations shall be imposed thereon as are indicated in the ap pended claims or as 'are demanded by the prior art. I claim: A

1. In a sand cleaning and reclaiming unit in combination, an elevator fusing, a screen, a two-part housing therefor, one part of which comprises spaced side and end walls, and angles respectively secured to said side walls so that the flanges thereof provide elongated supporting shoulders, at least onc'of said angles being extended to provide a supporting portion adapted to be securedto one wall of said elevator casing.

2. A sand cleaning and reclaiming unit comprising a housing, a pair of angles,the flanges of which are so secured to the housing side walls as to permitthe other flanges to serve as supporting shoulders, and an elevator casing, one wall of which is'rigidly secured to a flange of at least one of said angles.

3. In a sand cleaning and reclaiming unit, an elevator head having a casing provided with side and end walls, ascrecn in communication with said'casing, a housing for said screen provided with clean sand and dust discharge outlet-s, and means forsupporting said housing on said elevatorV casing comprising an angle, one flange oi which is so secured toa sidewall of said housing and said casingside wall that the other flange mayr constitute a supporting shoulder, said housing having a removable cover for said screen adapted to enga e said supporting shoulder.

4. In a sand cteaning and reclaiming unit, an elevator head having a casing provided with side and end Walls, a screen in communi cation with said casing, a housing for said.

a supporting shoulder, said housing having a removable cover for said screen adapted to enga-ge said supporting shoulder, a second angle having one flange secured to the end wall of said casing and the other Harige mounted on said first-mentioned angle, and a shaft for operating said screen mounted on said last-mentioned Harige.

5. In a sand cleaning and reclaiming unit, an elevator casing, a screen, a two-part housing therefor, one part of which comprises spaced side and-end Walls, angles respectively secured to said side Walls so that the flanges thereof provide elongated supporting shoulders, atleast one of said angles being extended to provide a supporting portion adapted to be secured to one Wall of said elevator casing, and a shaftfor operating said screen supported at least in part on the extendedpon tion of said last-mentioned angle.

Y HARRY W. TITGEN. 

